Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Income Taxes [Abstract] | |||||||||||
| Computed expected income tax expense (benefit) at statutory regulatory tax rate | $ 11,160 | $ 6,574 | $ 3,878 | ||||||||
| Meals and entertainment | 32 | 27 | 25 | ||||||||
| Tax exempt interest | (1,259) | (1,276) | (1,314) | ||||||||
| Dividends received deduction | (141) | (107) | (101) | ||||||||
| State taxes (net of federal benefit) | 176 | 259 | 276 | ||||||||
| Other | 55 | (124) | 71 | ||||||||
| Income tax expense (benefit) | $ 1,641 | $ 3,137 | $ 2,899 | $ 2,346 | $ 1,833 | $ 1,265 | $ 391 | $ 1,864 | 10,023 | 5,353 | 2,835 |
| Current income tax (benefit) expense | 11,053 | 5,746 | 3,092 | ||||||||
| Deferred income tax expense (benefit) | (1,030) | (393) | (257) | ||||||||
| Income tax (benefit) expense | $ 1,641 | $ 3,137 | $ 2,899 | $ 2,346 | $ 1,833 | $ 1,265 | $ 391 | $ 1,864 | $ 10,023 | $ 5,353 | $ 2,835 |